Hi can someone please tell me where this pin is on the motherboard and how to use is thanks ?

It's an ACER Aspire E5-571 E5-531 Z5WAH LA-B161P Motherboard the schematic is free to download online I forgot bios password and I'm trying to remove it can someone please help
Inked2020-06-08_LI.jpgLA-B161P-1.jpgLA-B161P-4.jpg